Wire-strapping tool



Aug. 7, 1923.

n.. CAMPBELL WIRE SVTRAPPING TOOL Filed ADTil 14 1920 NVENTOR m,AYARDCA/Vpfl.

A TTO/e/VE y viso atented Aug. 7, 1923.

UNITED STATES LAYARD CAMPBELL, OF NEW YORK, N. Y., `ASSIGrNOR, BY MESNE`ASSTGl-NllrIEN'I,S, T0 i TWIST SEAL COMPANY, OF CHICAGO, ILLINOISQACORPORATION OF DELAWARE.

PATENT OFFICE.

WIRE-STRAPPING TOOL.

Application led lApril 14, 1920. Serial No. 373,708.

To aZZ 'whom it may concern.'

Be it known that I, LAYARD` CAMrBnLma citizen of the United States, anda resident of the city of New York, borough of Manhattan, in the countyand State of New York, have invented certain new and usefulvImprovements in Wire-,Strapping Tools, of 'which` the following is afull, clear, and exact description.. i p

Among the principal objects which the present invention has in view are:To em- ,ploy'continuoua unshaped wire for strap- Figure 1 is a side viewshowing fragments of a tool 'of the character mentioned, constructedandarranged in accordance with the present invention, showing inconjunction therewith aI crate and wire looped thereabout,'` prior `toyclosing or tightening 'the same on the crate around which it has 'beenpassed, `the broken lines of said figure illustratingv the position ofthe take-up lever and of the wire strap. when the lever is thrown to theretracted position;

yj 1 VFigure2 1s a detail view on enlarged scale, showing fragments ofthe takeup lever and toolhandle, together with the twisting head withwhich the tool is provided; and

Figure 3 is an edge view of the same.

f i Description. Heretofore the usual practice has been to employ bale`wiresor wires having a loop which the crate has been bound. Also thetie formed by over-turning the 1 secondary loophas been unsatisfactorythat it is easily opened and loosened.

Another form o-f strap has existed whe-re the straight ends ofthe-wirestrap have `been drawn together, and twisted upon each otherlengthwise of the strap. The tools employed forr accomplishing this havebeen i objectionable in that they have been exceedingly heavy, therebytaxing the endurance of the mechanic. And furthermore, they have liftedthe joined end of the strap from the crate, to permit the making olf thetie, so

that when released from the machine the strap is relaxed'upon thepackage.

The objections abo-ve mentioned are sought to be avoided by the usev ofthe present tool, wherein a handle 8 has a laterally-extendedA foot 9,wherein isy pivoted a head 10. The pivotal connection for the head 10with the foot 9 is formed bythe hollow stud 11,'the end 12 'whereof isoverturned to hold the head 10 permanently conneoted` with the handle 8.Thestud 11 is tubular to form a passage through which the strapping wireA is passed.l The tubular passage in the stud 11 opens into thetransverse slot 13,y wherein are pivoted the pulleys 14. i i

At 25 I have illustrated aflever which is pivoted to the handle 8 at 26.Lever 25 carries a roller 15 and a dog 16, the latter being pivoted vtothe lever at 17.

The wire A is delivered on a reel or other bulk supply, and s threadedbetween the flange roller 15 and the toothed end of the dog 16. The dog16 is pivoted by the pin 17, whereon it is rocked by the weighted end18. The flange 19 of the roller 15 serves to guide the` wire A. Akfurther guide is furnished for the wire A by the pin 20, which alsoserves as the vside of a vdetent jaw when cooperating with the vdog 21.v

The dog 21 is vpivotally mountedby the pin 22 on the handle 8, and isnormally set in operative position by the weighted end 2,3 with whichthe said dog is furnished. Adjacent the pin 20 and dog 21 is an abutmentpin 24, which limits the extension of the free end of the wire A as'thesame is returned through the passage in the stud l1, and `loetween thepin 20 and dog ,2.1. ln operation the wire A is first threaded betweenthe roller 15 and the dog 16. This operation is facilitated by rockingthel takeup lever on itspivot bolt 26, to a position Where thedog 16 isopen, or the toothed end is removed from engagement with the roller 15.YThe wire is then passed above the pin;20,through the opening inthe stud11, and through the slot 13 between the pulleys 14. From this point itisfextended around the crate B, in the loose form sho-wn by full linesin Figure l of the drawings, and the free end is returned and threadedback through the slot 13, between the pulleys 14 through the stud 11 andbetween the pin 20 andthe dog 21, until it is arrested by the end of thewire A engaging the abutment pin 24. Thereafter the end of the wire A isheld by the dogv2l against retraction.

The operator now draws backward the lever 25, with the result that the'dog 16 rocks to position to engage the wire A, and to hold the sameagainst further'passage therebetween.v The wire A now being held by thelever 25, the slack of the wire A,

where it extends around the package B, is taken up, asv shown by thedotted lines in Figure l. Whenthe wire is drawn in this position, theoperator raises the lever 25` to the upright position, the dog 16releasing the wire A, which is, therefore, n ot fed forward as the ydogmoves forward. At the proper position the lever 16 .is again retracted,the dog 16 taking a fresh bite on the wire and drawing on the loop aboutthe package B more tightly. Y

This operation is repeated until the loop about the package B iscontracted as tightly as may bedesired. The lever 25 is at this time ina position substantially parallel with the handle 8. The operator nowholding the lever and handle 8 in their relative positions, turns thetool about the lstud 11, thel head 10 being non-rotatively held by thewire A as the same extends in opposite directions to opposite sides` ofthe package B. As the tool is revolved, the portions ofv the wire withinand adjacent the head 1,0., up to the pin 20, are twistedupon eachother. lIf the rotation is continued, a very tightly andy securelytwisted section is obtaine Then this has been effected, the wire A issevered at a' point adjacent to the pin 2 0, andthe tool is thenwithdrawn yfrom engagement, with the twisted section of the said wire,'which then extends perpendicu larly to the side ofthe package, `This iscorrectedby means'of a hammer or other tool, which' is used to beatvdown the standard twisted section, or to lay the same parallel with thewire strap at either side of the junction of the twisted ends.

kIt will be noted that the wire lA is still engaged by the roller 15,and dog 16, so `that the tool is ready for the next operation.

r It isv obvious that the herein disclosed which isbeing secured,resulting in the saving of large quantities of wire employed in thisart.

Glut/ms. i

l. A tool as characterized comprising a guide member for aligning thesections of a wire strap adjacent the terminal thereof; a handlepivotally connected with said guide member for rotation thereon; meansmounted on said handle for holding said termi nal; and means mounted onsaid handle for engaging the wire from which said strap is formed, saidvmeans being adapted to engage said wire sten by step.

2. A tool as characterized comprising a. handle for holding one end of alooped wire; a lever` pivotally mounted on said handle for holding theopposite end of said looped wire; a head pivotally mounted on saidhandle for guiding the ends of said looped wire; said head being adaptedto guide the wire while said handle and lever are rotated about thepivotal connection of said head for twisting the ends of said Wiretogether.

3. A tool of the class described, comprising parallel pulleys adapted toliev against a surface of a package and to guide the terminals of awireloop extended around said package, ahead carrying said pulleys, apassage through said head, said passage being disposed with its axissubstantially'at right angles to the axes of said pulleys, a handlevmounted on said head for rotation around the axis of said passage, andmeans carried `by said handle and located'at one end of said passageadapted to grip and space wire loop terminals which extend through saidpassage from the opposite side thereof.

4. A tool of the class described, comprising parallel pulleys adapted tolie against a surface of a package and to guide the terminals of a wireloop extended around said package, a head carrying said pulleys, apassa-ge through said head, said passage be,- ing disposed with its axissubstantially at right angles to the axes of said rollers, a handlemounted on said" head for rotation around the axis of said passage, andmeans carried by said handle and located at one end of' said passageadapted to grip and space wire loop terminals v which extend throughsaid passage from the opposite side thereof, said gripping andl spacingmeans comprising a lever pivoted to said handle substantially as and forthe purpose set forth.

5. A tool of the class described, comprising a tubular guide member. a4handle rotatably mounted on said guide member and extendingsubstantially parallel to the axis thereof, means on said handle Jr`orgripping one end of the Wire loop, a take-up lever pivotally secured tosaid handle, and a dog on said take-up lever for gripping the other endof the Wire loop.

6. A tool of the class described, including a guide member having atubular portion, a handle mounted on said tubular portion for rotationaround the axis thereof, a take-up lever pivotally secured to saidhandle, and

a Wire gripping dog on said take-up mem- 7. A tool of the classdescribed, comprising a head having a, passage therethrough, and adaptedto lie in contact with the surface of the 'package with the axis of saidpassage at substantially right angles to said surface, a handle carriedby said head and extending substantially parallel to the axis of saidpassage, a take-up lever pivotally secured to said handle, and Wiregripping means carried by said take-up lever.

8. A tool of the class described comprising a head having a passagetherethrough and yadapted to lie in Contact with the surface of apackage With the axis of said passage substantially at right anglestosaid surface, a. handle rotatably mounted on said head, means carriedby said handle for gripping one end of a Wire loop, a takefup levercarried by said handle, and means on said take-up lever for gripping theother end of the Wire loop.

LAYARD CAMPBELL.

